4-14
Configuring an MLD Snooping Policy
Configuration Prerequisites
Before configuring an MLD Snooping policy, complete the following tasks:
z Enable MLD Snooping in the VLAN
Before configuring an MLD Snooping policy, prepare the following data:
z IPv6 ACL rule for IPv6 multicast group filtering
z The maximum number of IPv6 multicast groups that can pass the ports
Configuring an IPv6 Multicast Group Filter
On a MLD Snooping–enabled switch, the configuration of an IPv6 multicast group filter allows the
service provider to define limits of multicast programs available to different users.
In an actual application, when a user requests a multicast program, the user’s host initiates an MLD
report. Upon receiving this report message, the switch checks the report against the configured ACL
rule. If the port on which the report was received can join this IPv6 multicast group, the switch adds an
entry for this port in the MLD Snooping forwarding table; otherwise the switch drops this report
message. Any IPv6 multicast data that fails the ACL check will not be sent to this port. In this way, the
service provider can control the VOD programs provided for multicast users.
Configuring an IPv6 multicast group filter globally
Follow these steps to configure an IPv6 multicast group globally:
To do... Use the command... Remarks
Enter system view system-view —
Enter MLD Snooping view mld-snooping —
Configure an IPv6 multicast
group filter
group-policy acl6-number
[ vlan vlan-list ]
Required
By default, no group filter is globally
configured, that is, hosts in VLANs
can join any valid IPv6 multicast
group.
Configuring an IPv6 multicast group filter on a port or a group of ports
Follow these steps to configure an IPv6 multicast group filer on a port or a group of ports:
To do... Use the command... Remarks
Enter system view system-view —
interface interface-type
interface-number
Enter Ethernet port/Layer 2
aggregate port view or port
group view
port-group manual
port-group-name
Required
Use either approach
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